can I use coursera and open courseware as a part of my curriculum and how do I find curriculums ?

Pre-College Issues Home Schooling and College
1

I am wondering If I can use course material from these websites and the great course as part of my homeschool course material?

If the course is long enough could I use it as my main course material?

Also for the course that have college level material do I label them Advanced, college level or honors?

2

Yes, you can use open resources as part of your homeschool classes.
Some are appropriate as main course material and some aren’t. If you aren’t sure, seek advice on the specific item.
You shouldn’t label them as college level - in general you can’t get college credit. (If you earn credit through ASUX Freshman Academy or similar you can certainly call it college level.)